ADU Contractor in Filer, Idaho
Filer homeowners: Twin Falls ADU Guys is minutes away and ready to help you build an ADU. Full-service from feasibility to move-in.
ADU Services in Filer
Filer is one of our closest neighboring communities — just 8 miles west of Twin Falls on Highway 30. With a tight-knit residential character and growing interest in property investment, Filer is a great fit for ADU projects. We serve Filer through the Twin Falls County building process and know the local zoning requirements well.
Permitting in Filer
Filer (population ~2,700) is under 10,000, so the Idaho SB 1354 ADU mandate does not bind it — ADU permissibility depends on Filer's own local zoning code (Title 9). The surrounding unincorporated Area of City Impact is governed by Twin Falls County. We confirm the rules for your specific parcel with the city during the Feasibility Check.
ADU Rules in Filer
Local code governsFiler (population ~2,700) is under the 10,000 SB 1354 threshold, so no statewide law compels it to allow ADUs. ADU permissibility depends entirely on the City of Filer's local zoning code (Title 9) — we verify it for your parcel.
- Zoning authority
- City of Filer Planning & Zoning / City Clerk (208-326-5000, Administrator Vera Pedrow-Nunez). Unincorporated Area of City Impact: Twin Falls County Community Development Services.
- ADU size limit
- Confirmed during your free Feasibility Check.
- Setbacks
- Confirmed during your free Feasibility Check.
- Permits & fees
- Confirmed during your free Feasibility Check — we get an exact quote from the local office.
- Owner-occupancy
- Confirmed during your free Feasibility Check.
- Typical 1BR ADU rent
- $750-$1,100/month (Magic Valley estimate)
What an ADU Can Do for Filer Homeowners
ADU Types We Build
- ✓Detached new build ADU
- ✓Garage conversion ADU
- ✓Attached ADU addition
- ✓Pre-fabricated ADU installation
- ✓Basement conversion (where applicable)
Full-Service Includes
- ✓Feasibility assessment + site visit
- ✓Custom ADU design
- ✓All permit applications and coordination
- ✓General contracting + all trades
- ✓Final inspection + Certificate of Occupancy
Idaho ADU Law and Filer
Filer is under 10,000 population, so the Idaho SB 1354 ADU mandate does not bind it — whether you can build an ADU is governed by the local zoning code. That is exactly what our Feasibility Check verifies for your parcel. (Idaho HB 166 separately protects an internal ADU on an owner-occupied homestead from HOA bans.) Learn more about Idaho ADU law →
How We Build Your ADU in Filer
The same proven 4-step process we use across the Magic Valley
Free Readiness Call
10-15 minutes. We learn about your property and goals, and confirm whether a Feasibility Check makes sense.
Feasibility Check ($250-$750)
On-site visit, measurements, zoning verification with your local planning department, utility assessment, and a complete report with budget range.
Design + Permits
We design your ADU to code and handle every permit application with your city and county building department.
Construction
Our licensed team handles all trades — framing, plumbing, electrical, HVAC, and finishes. One team, start to finish.
Plan Your ADU in Filer
Whether you are just researching or ready to start, here is everything you need to know about building an ADU in Twin Falls County.
Cost in Filer
ADU pricing for Twin Falls County — garage conversion vs detached vs prefab, with hidden costs explained.
Permits in Filer
How we handle the full permit process — Zoning Use Permit, building permits, trade permits, inspections.
Financing Options
HELOC, construction loans, cash-out refinance, FHA — how Filer homeowners pay for their ADU.
Idaho ADU Law
HB 166, HOA rules, the 45% size rule — what state and local law actually requires.
Also Serving Near Filer
We serve all of Twin Falls County and surrounding communities. If you are near Filer, we can help — contact us to confirm availability for your specific location.
Ready to Build an ADU in Filer?
Start with a free 10-15 minute Readiness Call. We'll assess your property, walk through the local permit process, and tell you exactly what's possible.